A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5998-01-295-8991
NSN 5950-01-287-8493
NSN 6220-01-480-9536
NSN 6685-01-350-3451
NSN 6145-00-551-5288
NSN 5930-01-145-0525
NSN 5910-01-249-3081
NSN 5998-00-617-5323
NSN 5998-01-340-9897
NSN 6240-00-491-7191
NSN 6610-00-500-6944
NSN 5920-01-069-9833